To protect it from floods, the city of Tokyo has an impressive underground infrastructure featuring five enormous cylindrical what?

Which sport made its debut as an official Olympic event at the 2020 Tokyo Summer Olympics?

In Japan, golfers sometimes buy insurance for what unusual reason related to getting a hole-in-one?

What term is used in Japan to describe individuals who reside in internet or cyber cafes because it is more affordable than renting an apartment?

In 1993, which religious group released Anthrax in a city near Tokyo?

Besides preventing illness, surgical masks in Japan are sometimes used for what other reasons?

In Japan, while direct cash gambling is illegal, winnings from games are often exchanged for what items before being converted to cash?

What term, meaning 'divine winds', did the Japanese use for the storms that helped repel Mongol invasions?

True Kobe beef is exclusively derived from Tajima-gyu cattle raised in which specific prefecture of Japan?

When ordering in a Japanese restaurant, what is 'sushi' fundamentally referring to?